I have been to WDW in October and loved it!! The weather was great.
I would recommend that you plan ahead what you want to do and make reservations. I am a planner at heart and I feel that I can fit more in if I have it all laid out ahead of time.
Everyone has favorites. I guess I can say some of mine. 1) Epcot- WS I know that kids usually do not like Epcot as much as adults, but I love it. Maybe your kids might get into the other cultures. 2) DMGM -- I loved the California atmosphere. If you are a LA native, you might feel the romance of that place. It is what DCA should have been. 3) Adventurer's Club -- I love this at DD. It is fun and interactive. Unfortunately, it is adult oriented. Not really a kid thing but they are not banned.
I am sure you will have a great time.